reveng - add some common use examples to -h help

[proxmark3-svn] / client / reveng / cli.c

diff --git a/client/reveng/cli.c b/client/reveng/cli.c
index 538fab199f8d6c4a74ea0b1669fc1be5777dabb9..224eedd606915f85d538afd852866158415a8fb2 100644 (file)
--- a/client/reveng/cli.c
+++ b/client/reveng/cli.c
@@ -605,7 +605,19 @@ usage(void) {
                        "\t-c calculate CRCs\t\t-d dump algorithm parameters\n"
                        "\t-D list preset algorithms\t-e echo (and reformat) input\n"
                        "\t-s search for algorithm\t\t-v calculate reversed CRCs\n"
-                       "\t-h | -u | -? show this help\n"
+                       "\t-g search for alg given hex+crc\t-h | -u | -? show this help\n"
+                       "Common Use Examples:\n"
+                       "\t   reveng -g 01020304e3\n"
+                       "\t      Searches for a known/common crc preset that computes the crc\n"
+                       "\t      on the end of the given hex string\n"
+                       "\t   reveng -w 8 -s 01020304e3 010204039d\n"
+                       "\t      Searches for any possible 8 bit width crc calc that computes\n"
+                       "\t      the crc on the end of the given hex string(s)\n"
+                       "\t   reveng -m CRC-8 -c 01020304\n"
+                       "\t      Calculates the crc-8 of the given hex string\n"
+                       "\t   reveng -D\n"
+                       "\t      Outputs a list of all known/common crc models with their\n"
+                       "\t      preset values\n"
                        "\n"
                        "Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015  Gregory Cook\n"
                        "This is free software; see the source for copying conditions.  There is NO\n"